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allow async ignored signals to be reset to SIG_DFL; give rl_input_available_hook precedence in readline:rl_gather_tyi

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This commit is contained in:
Chet Ramey
2023-01-24 11:14:22 -05:00
parent a37b2af985
commit d0bc56a325
9 changed files with 116 additions and 48 deletions
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trap.c
+11
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@@ -902,6 +902,17 @@ restore_default_signal (int sig)
if (sigmodes[sig] & SIG_HARD_IGNORE)
return;
/* Even if the signal is not trapped, POSIX interp 751 requires that we
allow `trap - SIGINT' to reset the signal disposition for SIGINT to
SIG_DFL. */
if ((sigmodes[sig] & (SIG_TRAPPED|SIG_ASYNCSIG|SIG_NO_TRAP)) == SIG_ASYNCSIG)
{
original_signals[sig] = SIG_DFL; /* XXX */
set_signal_handler (sig, SIG_DFL);
change_signal (sig, (char *)DEFAULT_SIG);
return;
}
/* If we aren't trapping this signal, don't bother doing anything else. */
/* We special-case SIGCHLD and IMPOSSIBLE_TRAP_HANDLER (see above) as a
sentinel to determine whether or not disposition is reset to the default